ICD-10 Code D69.5 – Secondary thrombocytopenia (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D69.5 – Secondary thrombocytopenia
What it is
D69.5 identifies thrombocytopenia caused by another condition or factor, rather than a primary platelet disorder. Use it when the record clearly links the low platelet count to an underlying disease, drug, or other secondary cause.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include bruising, petechiae, mucosal bleeding, or an unexpectedly low platelet count noted on laboratory testing.
When to use this code
Use this code when the clinician documents secondary thrombocytopenia, thrombocytopenia due to another disorder, or a similar causal relationship. It is also appropriate when the note clearly states an external or underlying cause, such as a medication or systemic illness.
Code the underlying condition first when instructed by the record and coding guidelines. If the cause is not documented, check documentation before assigning D69.5.
Do not use for
Do not use this code for primary thrombocytopenia, immune thrombocytopenia, or unspecified thrombocytopenia without a documented secondary cause. Check documentation if the chart does not clearly identify the etiology.
Coding tip
Always verify the documented cause and sequence the underlying condition when required.